Table 1.

Effect of cell phone EMF-r at 2100 MHz on the contents of (a) MDA, (b) H₂O₂, and (c) O₂^•− in onion roots.

Treatment/Exposure Period (h)	MDA content (nM g−1 f. wt.)	H2O2 content (nM g−1 f.wt.)	Superoxide anions (mM g−1 f.wt.)
Control	11.2 ± 1.14 a	3.57 ± 0.41 a	0.30 ± 0.03 a
Sham Control	13.8 ±0.57 a	5.24 ±0.63 ab	0.35 ± 0.03 a
1 h	14.4 ± 0.42 b	7.86 ± 0.41 b	0.41 ± 0.04 a
2 h	15.5 ± 0.37 b	10.48 ± 0.63 c	0.61 ± 0.04 b
4 h	19.4 ± 0.99 c	18.33 ± 0.86 d	0.70 ± 0.03 c

Different letters in a column represent significant difference at p ≤ 0.05 according to Tukey's Post hoc test.